The Jacks have enjoyed two successful seasons in the Premier League and in February they won the League Cup after beating Bradford City 4-0 in the final.

But Curtis believes that such achievements will come at a cost as other clubs attempt to sign their stars.

Manager Michael Laudrup and Spanish sensation Michu have both penned new deals at the Liberty Stadium recently, which will boost their chances of retaining their best men, but Curtis conceded that they could still lose some players.

He told Matchday Live: “The fact that Michael has stayed will have a huge bearing on the foreign players [remaining at the club].

“There is always speculation but it just shows how well the club is doing, I guess we’ve got to expect it. With the likes of Ashley Williams and Michel Vorm there is a possibility they could move on, but that’s the same every season.

“Joe Allen left last season but which ever players come and go we’d love to keep our best players. It’s just a fact of life that a club like ourselves is going to have to face the speculation and deal with it if and when anything happens.”